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1. 发明授权

US10177395B2 Electrode catalyst, composition for forming gas diffusion electrode, gas diffusion electrode, membrane-electrode assembly, fuel cell stack, method for producing electrode catalyst, and composite particle 有权
公开(公告)号：US10177395B2
公开(公告)日：2019-01-08
申请号：US15316929
申请日：2016-03-30
申请人： N.E. CHEMCAT CORPORATION
发明人： Kiyotaka Nagamori , Tomoteru Mizusaki , Yoko Nakamura , Hiroshi Igarashi , Yasuhiro Seki
IPC分类号： H01M4/92 , H01M8/1004 , B01J23/44 , B01J35/08 , B01J37/02 , H01M4/86 , H01M4/88 , H01M8/1018
摘要： To provide electrode catalyst (core-shell catalyst) having an excellent catalyst activity which contributes to lower the cost of the PEFC. The electrode catalyst has catalyst particles supported an a support. The catalyst particle has a core part containing simple Pd and a shell part containing simple Pt. A percentage RC (atom %) of the carbon of the support and a percentage RPd (atom %) of the simple Pd in an analytical region near a surface measured by X-ray photoelectron spectroscopy (XPS) satisfy the conditions of the following equation (1): 2.15≤[100×RPd/(RPd+RC)].

2. 发明授权

US09893365B2 Electrode catalyst, composition for forming gas diffusion electrode, gas diffusion elelctrode, membrane-electrode assembly, and fuel cell stack 有权
公开(公告)号：US09893365B2
公开(公告)日：2018-02-13
申请号：US15102438
申请日：2015-08-27
申请人： N.E. CHEMCAT Corporation
发明人： Kiyotaka Nagamori , Tomoteru Mizusaki , Yoko Nakamura , Hiroshi Igarashi , Yasuhiro Seki
IPC分类号： H01M4/92 , H01M4/86 , B01J27/22 , B01J35/08 , H01M4/90 , H01M8/1004 , H01M8/10 , H01M8/1018
CPC分类号： H01M4/8657 , B01J27/22 , B01J35/08 , H01M4/86 , H01M4/90 , H01M4/9016 , H01M4/9075 , H01M4/92 , H01M4/925 , H01M8/10 , H01M8/1004 , H01M2008/1095
摘要： To provide electrode catalyst which has the catalyst activity and durability at a practically durable level and contributes to lowering of the cost in comparison with the conventional Pt/C catalyst. The electrode catalyst has a support and catalyst particles supported on the support. The catalyst particle has the core part, the first shell part formed on the core part, and the second shell part formed on the first shell part. The core part contains W compound including at least W carbide, the first shell part contains simple Pd, and the second shell part contains simple Pt.

3. 发明申请

US20180013158A1 ELECTRODE CATALYST, COMPOSITION FOR FORMING GAS DIFFUSION ELECTRODE, GAS DIFFUSION ELECTRODE, MEMBRANE-ELECTRODE ASSEMBLY, FUEL CELL STACK, METHOD FOR PRODUCING ELECTRODE CATALYST, AND COMPOSITE PARTICLE 审中-公开
公开(公告)号：US20180013158A1
公开(公告)日：2018-01-11
申请号：US15316929
申请日：2016-03-30
申请人： N.E. CHEMCAT CORPORATION
发明人： Kiyotaka Nagamori , Tomoteru Mizusaki , Yoko Nakamura , Hiroshi Igarashi , Yasuhiro Seki
IPC分类号： H01M4/92 , H01M4/86
CPC分类号： H01M8/1004 , B01J23/44 , B01J35/08 , B01J37/02 , H01M4/86 , H01M4/8657 , H01M4/8807 , H01M4/92 , H01M4/921 , H01M4/926 , H01M2008/1095
摘要： To provide electrode catalyst (core-shell catalyst) having an excellent catalyst activity which contributes to lower the cost of the PEFC. The electrode catalyst has catalyst particles supported an a support. The catalyst particle has a core part containing simple Pd and a shell part containing simple Pt. A percentage RC (atom %) of the carbon of the support and a percentage RPd (atom %) of the simple Pd in an analytical region near a surface measured by X-ray photoelectron spectroscopy (XPS) satisfy the conditions of the following equation (1): 2.15≦[100×RPd/(RPd+RC)].

4. 发明授权

US09437876B2 Production method of electrode catalyst, electrode catalyst, composition for forming gas diffusion electrode, gas diffusion electrode, membrane-electrode assembly (MEA), and fuel cell stack 有权
标题翻译：电极催化剂，电极催化剂，用于形成气体扩散电极的组合物，气体扩散电极，膜 - 电极组件（MEA）和燃料电池堆的制备方法
公开(公告)号：US09437876B2
公开(公告)日：2016-09-06
申请号：US15022753
申请日：2015-03-27
申请人： N.E. Chemcat Corporation
发明人： Yoko Nakamura , Kiyotaka Nagamori , Tomoteru Mizusaki , Takuya Tsubaki
IPC分类号： B01J23/38 , B01J23/42 , B01J23/44 , B01J23/52 , B01J23/755 , B01J37/00 , H01M4/86 , H01M4/92 , H01M4/88
CPC分类号： H01M4/8657 , H01M4/86 , H01M4/8825 , H01M4/8842 , H01M4/90 , H01M4/92 , H01M4/921 , H01M4/926 , H01M8/02 , H01M2008/1095 , Y02P70/56
摘要： Provided is a production method of an electrode catalyst that can reduce the content of chlorine species reliably and sufficiently through a simple operation, even when using an electrode catalyst precursor containing a high concentration of chlorine (Cl) species as a raw material of the electrode catalyst. The production method of the electrode catalyst has a core-shell structure including a core part formed on a support and a shell part formed to cover at least a part of a surface of the core part. The production method includes a first step (1) of preparing a first liquid with an electrode catalyst precursor (I) being dispersed in ultrapure water by adding the electrode catalyst precursor (I) to the ultrapure water, the electrode catalyst precursor (I) being produced using a material containing chlorine (Cl) species, and exhibiting a chlorine (Cl) species concentration not lower than a first chlorine (Cl) species concentration when measured by X-ray fluorescence (XRF) spectroscopy; and a second step (2) of preparing a second liquid by dispersing an electrode catalyst precursor (II), the electrode catalyst precursor (II) being obtained by filtrating and washing the electrode catalyst precursor (I) contained in the first liquid with ultrapure water, and then performing washing until an electric conductivity ρ of a filtrate has become a first value or lower.
摘要翻译：提供一种电极催化剂的制造方法，即使使用含有高浓度氯（Cl）种类的电极催化剂前体作为电极催化剂的原料，也能够通过简单的操作可靠且充分地降低氯物质的含量。电极催化剂的制造方法具有芯壳结构，其包括形成在支撑体上的芯部和形成为覆盖芯部的表面的至少一部分的壳部。制备方法包括：通过将电极催化剂前体（I）加入到超纯水中，制备第一液体的第一液体，其中电极催化剂前体（I）分散在超纯水中，电极催化剂前体（I）为使用含有氯（Cl）物质的材料制备，并且当通过X射线荧光（XRF）光谱法测量时，表现出不低于第一氯（Cl）种类浓度的氯（Cl）种类浓度; 以及通过分散电极催化剂前体（II）制备第二液体的第二步骤（2），通过用超纯水过滤和洗涤包含在第一液体中的电极催化剂前体（I）而获得的电极催化剂前体（II），然后进行洗涤直到滤液的电导率ρ变为第一值以下。

5. 发明申请

US20210184228A1 ELECTRODE CATALYST, COMPOSITION FOR FORMING GAS DIFFUSION ELECTRODE, GAS DIFFUSION ELECTRODE, MEMBRANE ELECTRODE ASSEMBLY AND FUEL CELL STACK 有权
公开(公告)号：US20210184228A1
公开(公告)日：2021-06-17
申请号：US17052693
申请日：2019-05-15
申请人： N.E. CHEMCAT CORPORATION
发明人： Kiyotaka Nagamori , Yoko Nakamura , Tomoteru Mizusaki , Yasuhiro Seki , Hiroshi Igarashi
IPC分类号： H01M4/92 , H01M8/1004 , H01M4/86 , H01M8/1018 , H01M4/88
摘要： Provide an electrode catalyst with excellent catalytic activity that can contribute to cost reduction of PEFC. The electrode catalyst includes a hollow carbon carrier with mesopores with a pore size of 2 to 50 nm and a catalyst particle supported on the carrier. The catalyst particle is supported on both inside and outside the mesopores of the carrier, and have a core portion formed on the carrier and a shell portion covering at least a part of the surface of the core portion. Pd is included in the core portion, and Pt is included in the shell portion, and when the analysis of the particle size distribution of the catalyst particles using the three dimensional reconstructed image obtained by electron beam tomography (electron tomography) measurement using an STEM is performed, the ratio of the catalyst particles supported inside the mesopore is 50% or more.

6. 发明申请

US20190039051A1 ELECTRODE CATALYST, COMPOSITION FOR FORMING GAS DIFFUSION ELECTRODE, GAS DIFFUSION ELECTRODE, MEMBRANE-ELECTRODE ASSEMBLY, AND FUEL CELL STACK 审中-公开
公开(公告)号：US20190039051A1
公开(公告)日：2019-02-07
申请号：US16078314
申请日：2017-01-24
申请人： N.E. CHEMCAT CORPORATION
发明人： Tomoteru Mizusaki , Yoko Nakamura , Kiyotaka Nagamori , Hiroshi Igarashi , Yasuhiro Seki
IPC分类号： B01J23/44 , H01M4/92 , H01M8/10 , B01J23/42 , B01J35/00
摘要： To provide electrode catalyst which has the catalyst activity equal to or more than the Pt/Pd/C catalyst. The electrode catalyst 10A has a support 2 and catalyst particles 3a supported on the support. The catalyst particle has the core part 4 formed on the support, the first shell part 5a formed on the core part and the second shell part 6a formed on a part of the surface of the first shell part. The core part contains Pd, the first shell part contains Pt, and the second shell part contains the Ti oxide. A percentage of the Pt R1Pt (atom %) and a percentage of the Ti derived from the Ti oxide R1Ti (atom %) in an analytical region near a surface measured by X-ray photoelectron spectroscopy satisfy the conditions of the equation (1): 1.00≤(R1Ti/R1Pt)≤2.50.

7. 发明授权

US09461313B2 Electrode catalyst, composition for forming gas diffusion electrode, gas diffusion electrode, membrane-electrode assembly, and fuel cell stack 有权
公开(公告)号：US09461313B2
公开(公告)日：2016-10-04
申请号：US15022651
申请日：2015-03-27
申请人： N.E. Chemcat Corporation
发明人： Kiyotaka Nagamori , Tomoteru Mizusaki , Yoko Nakamura , Takuya Tsubaki , Hiroshi Igarashi , Yasuhiro Seki
IPC分类号： H01M4/92 , H01M4/86 , H01M8/10 , B01J23/44 , B01J27/13 , B01J35/08 , B01J37/16
摘要： Provided is an electrode catalyst that can exhibit sufficient performance, is suitable for mass production, and is suitable for reducing production costs, even when containing a relatively high concentration of chlorine. The electrode catalyst has a core-shell structure including a support; a core part that is formed on the support; and a shell part that is formed so as to cover at least one portion of the surface of the core part. The electrode catalyst concurrently fulfills conditions expressed by the following formulae (1) and (2): (X1/M)≦1.2 . . . (1) (X2/M)≦47.0 . . . (2) (in the formula (1) and the formula (2), M represents an amount of substance (number of atoms) of one or more constituent metal elements of the shell part, X1 represents an amount of substance (number of atoms) of bromine (Br), and X2 represents an amount of substance (number of atoms) of chlorine (Cl)).

8. 发明授权

US11271219B2 Electrode catalyst, composition for forming gas diffusion electrode, gas diffusion electrode, membrane electrode assembly and fuel cell stack 有权
公开(公告)号：US11271219B2
公开(公告)日：2022-03-08
申请号：US17052693
申请日：2019-05-15
申请人： N.E. CHEMCAT CORPORATION
发明人： Kiyotaka Nagamori , Yoko Nakamura , Tomoteru Mizusaki , Yasuhiro Seki , Hiroshi Igarashi
IPC分类号： H01M4/92 , H01M4/86 , H01M4/88 , H01M8/1004 , H01M8/1018 , H01M4/02 , H01M8/10
摘要： Provide an electrode catalyst with excellent catalytic activity that can contribute to cost reduction of PEFC. The electrode catalyst includes a hollow carbon carrier with mesopores with a pore size of 2 to 50 nm and a catalyst particle supported on the carrier. The catalyst particle is supported on both inside and outside the mesopores of the carrier, and have a core portion formed on the carrier and a shell portion covering at least a part of the surface of the core portion. Pd is included in the core portion, and Pt is included in the shell portion, and when the analysis of the particle size distribution of the catalyst particles using the three dimensional reconstructed image obtained by electron beam tomography (electron tomography) measurement using an STEM is performed, the ratio of the catalyst particles supported inside the mesopore is 50% or more.

9. 发明授权

US10256475B2 Electrode catalyst, composition for forming gas diffusion electrode, gas diffusion electrode, membrane-electrode assembly, and fuel cell stack 有权
公开(公告)号：US10256475B2
公开(公告)日：2019-04-09
申请号：US15648015
申请日：2017-07-12
申请人： N.E. CHEMCAT Corporation
发明人： Kiyotaka Nagamori , Tomoteru Mizusaki , Yoko Nakamura , Takuya Tsubaki , Hiroshi Igarashi , Yasuhiro Seki
IPC分类号： H01M4/86 , H01M4/90 , H01M4/92 , H01M8/1004 , H01M8/1018
摘要： Provided is an electrode catalyst that can exhibit sufficient performance, is suitable for mass production, and is suitable for reducing production costs, even when containing a relatively high concentration of chlorine. The electrode catalyst has a core-shell structure including a support; a core part that is formed on the support; and a shell part that is formed so as to cover at least one portion of the surface of the core part. A concentration of bromine (Br) species of the electrode catalyst as measured by X-ray fluorescence (XRF) spectroscopy is 500 ppm or less, and a concentration of chlorine (Cl) species of the electrode catalyst as measured by X-ray fluorescence (XRF) spectroscopy is 8,500 ppm or less.

10. 发明申请

US20190051910A1 ELECTRODE CATALYST, COMPOSITION FOR FORMING GAS DIFFUSION ELECTRODE, GAS DIFFUSION ELECTRODE, MEMBRANE-ELECTRODE ASSEMBLY, AND FUEL CELL STACK 审中-公开
公开(公告)号：US20190051910A1
公开(公告)日：2019-02-14
申请号：US16078306
申请日：2017-01-24
申请人： N.E. CHEMCAT CORPORATION
发明人： Tomoteru Mizusaki , Yoko Nakamura , Kiyotaka Nagamori , Hiroshi Igarashi , Yasuhiro Seki
IPC分类号： H01M4/92 , H01M4/86 , H01M8/1004
摘要： To provide electrode catalyst which has the catalyst activity and durability equal to or more than the Pt/Pd/C catalyst. The electrode catalyst has a support and catalyst particles supported on the support. The catalyst particle has the core part formed on the support and the shell part formed on the core part. The core part contains a Ti oxide and Pd, and the shell part contains Pt.

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